Kurt Seifried
writes:
Aimed at administrators and users of Linux systems and networks
it contains over 120 pages of documentation, examples and resources
for securing Linux. The document is being released free of charge
for most use and is available as an adobe acrobat document (the
reader is freely available at www.abobe.com).
Topics covered include virtual private networking, shadow
passwords, user and system administration, specific security
information for network services such as Sendmail, Apache, Wu-FTPD
and more.
This is the first comprehensive non distribution specific
security book or guide for Linux, and it is free for non commercial
use. The guide is currently at version 0.0.9 (the “I didn’t want to
wait for 0.1.0 so I released it early” release) and can be
downloaded from: http://www.securityportal.com/lasg/